Grand Prairie climate
Grand Prairie (Texas, United States) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 19 °C66 °F, and about 935 mm37 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Grand Prairie climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 1356 | 134 | 745 | 632.5 | 12 |
| Feb | 1560 | 338 | 949 | 682.7 | 8 |
| Mar | 2069 | 846 | 1458 | 903.6 | 2 |
| Apr | 2577 | 1254 | 1966 | 833.3 | 0 |
| May | 2984 | 1763 | 2374 | 1124.4 | 0 |
| Jun | 3392 | 2272 | 2882 | 963.8 | 0 |
| Jul | 3697 | 2475 | 3086 | 522.1 | 0 |
| Aug | 3697 | 2476 | 3087 | 612.4 | 0 |
| Sep | 3290 | 2068 | 2679 | 783.1 | 0 |
| Oct | 2679 | 1356 | 2067 | 1084.3 | 0 |
| Nov | 2067 | 745 | 1356 | 582.3 | 2 |
| Dec | 1458 | 236 | 847 | 632.5 | 10 |
| Year | 3697 | 134 | 1966 | 93537 | 34 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 73% | 50% | 2.9 | 10:13 |
| Feb | 75% | 57% | 3.3 | 10:58 |
| Mar | 74% | 55% | 4.4 | 11:53 |
| Apr | 72% | 53% | 5.4 | 12:57 |
| May | 73% | 55% | 5.8 | 13:50 |
| Jun | 67% | 44% | 6.7 | 14:18 |
| Jul | 61% | 41% | 6.7 | 14:06 |
| Aug | 58% | 38% | 6.2 | 13:21 |
| Sep | 63% | 38% | 5.2 | 12:19 |
| Oct | 67% | 39% | 4.1 | 11:18 |
| Nov | 71% | 45% | 3.1 | 10:25 |
| Dec | 73% | 52% | 2.6 | 10:00 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Grand Prairie is like
The warmest month is August, with an average high of 36 °C97 °F and a low of 24 °C76 °F. The coldest is January, when highs average 13 °C56 °F and lows 1 °C34 °F. Seasons are strongly marked: the warmest month is on average 23.1 °C41.6 °F warmer than the coldest.
Annual precipitation is moderate at about 935 mm37 in. The wettest three-month stretch is April–June, which brings 31% of the annual total. The wettest month is May (112 mm4.4 in), the driest is July (52 mm2.1 in).
Relative humidity ranges from 58% in August to 75% in February. The clearest skies (lowest average cloud amount, 38%) are typical of September. Average wind speed near the ground ranges from 9 km/h (5 mph) in September to 12 km/h (8 mph) in April. Daylight lasts from about 10.0 hours in December to 14.3 hours in June.
Best time to visit Grand Prairie
Based on these averages, the most comfortable months for sightseeing and outdoor activities are March and April and November: average highs of 20 °C67 °F to 25 °C77 °F with 58 mm2.3 in to 90 mm3.6 in of precipitation per month.
The most challenging month is August, which is hot, with average highs of 36 °C97 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Grand Prairie
- Winter (December–February) — highs 1356 to 15 °C60 °F, lows 134 to 3 °C38 °F, about 65 mm2.5 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an extra layer for the cooler mornings and evenings.
- Spring (March–May) — highs 2069 to 29 °C84 °F, lows 846 to 17 °C63 °F, about 95 mm3.8 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
- Summer (June–August) — highs 3392 to 36 °C97 °F, lows 2272 to 24 °C76 °F, about 70 mm2.8 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Autumn (September–November) — highs 2067 to 32 °C90 °F, lows 745 to 20 °C68 °F, about 82 mm3.2 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
How Grand Prairie compares
Compared with Arlington, about 10 km to the west, Grand Prairie has practically the same average temperature and receives a similar amount of precipitation.
Of the 222 places in the United States covered by World Climates, Grand Prairie is the 51st warmest by annual mean temperature and the 123rd wettest by annual precipitation. See all of them on the United States climate page.
Places in other countries with the most similar temperature and rainfall pattern: Yongzhou (China, Cfa), Hongjiang (China, Cfa) and Hengyang (China, Cfa).
Nearby places
- Arlington 10 km · 19 °C66 °F · 935 mm37 in
- Dallas 18 km · 19 °C66 °F · 922 mm36 in
- Fort Worth 30 km · 19 °C66 °F · 869 mm34 in
- Plano 41 km · 18 °C65 °F · 922 mm36 in
- Denton 54 km · 18 °C65 °F · 922 mm36 in
- Waco 134 km · 20 °C67 °F · 946 mm37 in
- Tyler 165 km · 18 °C65 °F · 1,179 mm46 in
- Wichita Falls 190 km · 18 °C65 °F · 769 mm30 in
Frequently asked questions
What is the warmest month in Grand Prairie?
August is the warmest month in Grand Prairie, with an average high of 36 °C (97 °F) and an average low of 24 °C (76 °F).
What is the coldest month in Grand Prairie?
January is the coldest month, with an average high of 13 °C (56 °F) and an average low of 1 °C (34 °F).
When does it rain the most in Grand Prairie?
May is the wettest month with about 112 mm (4.4 in) of precipitation; July is the driest with about 52 mm (2.1 in).
What is the best time to visit Grand Prairie?
Judging by long-term averages, the most comfortable months are March and April and November.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.